From: Tore Anderson <tore.anderson@redpill-linpro.com>
To: Thomas Jacob <jacob@internet24.de>
Cc: netfilter@vger.kernel.org
Subject: Re: SMP load balancing of softirqs
Date: Thu, 29 Jan 2009 12:23:25 +0100 [thread overview]
Message-ID: <498191AD.7010302@redpill-linpro.com> (raw)
In-Reply-To: <1233226181.13705.24.camel@enterprise.ims-firmen.de>
* Thomas Jacob
> Some newer NICs (some of Intel's for instance) support several packet
> queues to make it possible to deal with just this problem.
>
> Check out http://lwn.net/Articles/289137/ for a start...
Interesting link, thanks! However, I was under the impression that the
problem is incoming (RX) frames, that causes an interrupt to be raised
on a certain CPU (core) which in turn causes the frame to be processed
by that particular CPU by the NET_RX softirq handler.
The multiqueue patch seem to be about being able to submit outgoing (TX)
frames to multiple hardware queues. So I don't think it will make much
of a difference for me?
> It would be great if you'd let the list know of the results should you
> try to use one of the multiqueue NICs for a netfilter firewall, I for
> one am very curious...
I'll remember that. Thanks again!
Best regards,
--
Tore Anderson
Redpill Linpro AS - http://www.redpill-linpro.com/
next prev parent reply other threads:[~2009-01-29 11:23 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-29 9:58 SMP load balancing of softirqs Tore Anderson
2009-01-29 10:49 ` Thomas Jacob
2009-01-29 11:23 ` Tore Anderson [this message]
2009-01-29 12:06 ` Thomas Jacob
2009-01-29 20:26 ` Tore Anderson
2009-01-29 17:33 ` Rick Jones
2009-01-31 15:17 ` Vlado Drz(ík
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